. $PSScriptRoot\..\..\Load-PesterModules.ps1
$here = Split-Path -Parent $MyInvocation.MyCommand.Path
$sut = (Split-Path -Leaf $MyInvocation.MyCommand.Path) -replace '\.tests\.', '.'
$functionPath = Join-Path -Path $here -ChildPath $sut
Write-Host "Overriding SUT: $functionPath"
Import-Module $functionPath -Force
$moduleForMock = ""

############################
# These Are Not Unit Tests #
############################

# These just attempt to ensure nobody accidentally mangles the hashtable array returned by the function
# which would result in hilarity, but also a bunch of bad things too

Describe "Get-SupportedPlatformAPMVersionMap" {

    Context "Poor Life Choices" {

        It "Has One and Only One Element With a Null PlatformMaximumVersion" {

            # Did this test fail?  You accidentally have no elements or more than 1 elements in the APM <-> Platform Version Map with a Null Max Value.
            #
            # There can be only one.
            #   - Connor MacLeod
            $nullMaxVersions = Get-SupportedPlatformAPMVersionMap | Where-Object { $null -eq $_.PlatformMaximumVersion }
            ([hashtable[]]$nullMaxVersions).Count | Should -Be 1
        }

        It "Only Has One Element With a 0.0.0 PlatformMinimumVersion" {

            # Did this test fail?  You accidentally have no elements or more than 1 elements in the APM <-> Platform Version Map with a Min Value Equivilant to 0
            #
            # One is the lonliest number that you'll ever do
            #   - Three Dog Night
            $zeroMinVersions = Get-SupportedPlatformAPMVersionMap | Where-Object { ("0.0.0" -eq $_.PlatformMinimumVersion) -or ("0.0.0.0" -eq $_.PlatformMinimumVersion) }
            ([hashtable[]]$zeroMinVersions).Count | Should -Be 1
        }

        It "Doesn't Have Any Duplicate APM Version Entries" {

            # Did this test fail?  You accidentally have more than one element with the same APM version.  That shouldn't be needed.  Discuss with the author if you think I'm wrong!
            #
            # You cannot duplicate this, you can't do me, I'm complicated
            #   -Lil Nacho
            $map = Get-SupportedPlatformAPMVersionMap
            $groupedValues = $map | ForEach-Object { $_.APMVersion } | Group-Object
            $groupedValues | Where-Object {$_.Count -gt 1} | Select-Object -ExpandProperty Name | Should -BeNullOrEmpty
        }
    }
}